<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
	<form action="/getdata" method="get">
		用户名：<input type="text" id="name" value="" name="username"/>
		<input type="submit" value="验证"/>
	</form>

</body>
</html>